Locomotive-boiler.



PATENTED MAY 29, i906.

f H, J. TRAVIS.

L-ocoMoTIv BoILEm APPLIQATON FILED HAY 12, 1905.

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No. sensori.

Specification of Letters Patent.

Eatented May 29, 1906.

Application nea nay iz, incursioni Nn. 260.098.

To a/ZZ ufl/1,071 it m/ftjf/ concern:

Be it known that l, HERBERT J TRAVIS, a citizen or' the United States, and a resident ot the borough of Brooklyn, in the city and State ot New York, have invented a new and useful Locomotive-Boiler, of Whichthe l'ollowinrjy is a specification.

My invention relates to locomotive-boilers, the object -bein to provide a boiler oi this typewhioh sha l be capable of burning pulverizcd 'fuel with great economy endvhigh ediciency.

in the accompanying drawings, Figure 1 is a partial longitudinalvertical section through a boiler embodying my invention. Fi f. 2 is a transverse section in the plane of the line A A of Fi 1, and Fig. 3 is a horizontal section in the p ane ci the line B B of Fig. 1.

The boiler, so far as its external shape and general structure is concerned, may be one of the locomotive-boilers in use, and one of the advantageous features 'of my invention is that it may be readily applied to boilers at present in use as well as to those which may be specially built to embody it.

The outer shell of the boiler denoted by 1.

The general wall oil' the fire-chamber is' donoted by 2, and the water-space between the shell 1 and 'fire-chamber Z by 3. w rihe waterspace is continued down the sides and iront of the'fire-chaniber, and the wall 2 is held in proper relation to the shell 1 by numerous tierods or rivets 4. The group of ire-tubes leading from the i'ront of the tire-chamber to the uptake is denoted by 5, and the steam donie by 6. The rear part of the 'lire-chainber is separated 'from the front part throughout a considerable portion of its height by a brick wall 7,Which, starting at the bottoni S, extends upwardly and graduallycurves over toward the rear end of the boiler, finally terminating at a point spaced from the top ofthe lire-chamber a distance sufficient toA permit the products or' combustion to pass over it into the front part of the chamber. The brick wall 7 .is supported by a series of transverse water-tubes 9, which are secured at their op.- posite ends in the wall of the fire-chamber, as clearly shown in Fig. 3, and forni an open passage for the circulation of wate between the water-spaces at the opposite sides of the {ire-chamber. These transverse water-tubes 9 are embedded in the brick wall and are coiivoniontly spaced apart the depth of a' edges for the reception of a succeeding transverse pipe, which may then be placed in position. step by step and curved over toward the rear oi" the lire-cliainber at such a curve as maybe desired, and the said wall will be held securely in position against the blast of the ignited pulverized fuel, and the transverse pipes then1selves,wl1i ch are both supportingpipes and watencirculating pipes, will be so thoroughly protected from the blast'of the ignited fuel that they `will not be liable to buckle or deteriorate under its influence.

The pulvcrized fuel is admitted through one or more pipes 11 at the lower part of the rear wall of the rire-chamber and passes into the chamber under a brick arch 12, Where it is ignited, and thence the 'llame passes forwardly against the roar or concave face of the wall '4, and the mingled flame and 'gases pass thence upwardly inclined to the rear, and thence over the top of the wall 7 into the forward part of the rire-chamber, and thence vthrough the r'iretube 5 to the uptake.

ln this manner the wall 7 may be builtv 'halt-round recesses in their upper faces or n I Doors `for gaining access to ythe interior of 4 theiire-ch'aniber 1, one denoted bylS) in the side wall of the iront part of the fire-chamber and another (denoted by 14) in the sidewalloil the rear part oi the fire-chamber.

Access to the interior of the tire-chamber may also be had. .through a door 15 in the rear wall of the chamber.

What l clain'i iso The combination with the -lire-chamber of a locomotive provided with an opening through its rear wall for the admission of a blast of pulverized fuel, of a wall extending upwardly am] rearwardlylironi the bottoni of the chamber'nterinediate'of the ends of the oha 1nbe1 and opposite the inflow ofthe pull myj-hventon Igj'h'ave myname, in pres verlzed fuel, the said Wall consisting of super- I enge of two .mt/messes, idlslOth dayoMay, posed brloks and transverse water-oroulatl! 1905.

mg tubos'engaged With the opposite Walls of 'l y,/ I HERBERT J. TRAVIS; 5 the Ere-chamber and housed within and. form-g Wtnessef; f 4

ing a support for the superposed briks'. FRED1 HA YNES,

n testimony that I claim the foregoing as HENRY Tlumn.y f 

